Soft tissue mobilization (STM) is a specialized manual therapy technique used in physical therapy to alleviate pain and improve mobility by manipulating the layers of soft tissue. It involves various methods such as myofascial release and trigger point therapy, targeting conditions like muscle strains and inflammation, while promoting tissue healing through increased blood flow and fibroblast activity. When performed by licensed professionals, STM is generally safe, though it has contraindications that must be considered in individual cases.